________in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the c

题目简介

________in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the c

题目详情

________in the qucue for half an hour ,the old man auddenly realized he had left the cheque in the car.
A.WaitingB.To waitC.Having waitedD.To have waited
题型:单选题难度:中档来源:不详

答案

C
有明显的先后关系,故要用V-ing的完成式。

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